QQ客服 官方微博 反馈留言

	Analysis of the mechanism of sludge ozonation by a combination of biological and chemical approaches
	Yan, Sang-Tian ; Chu, Li-Bing ; Xing, Xin-Hui ; Yu, An-Feng ; Sun, Xu-Lin ; Jurcik, Benjamin
	2010-10-12 ; 2010-10-12
关键词	Sludge reduction Ozonation Ozone dosage Biological response Radical scavenger REDUCE EXCESS SLUDGE 16S RIBOSOMAL-RNA ACTIVATED-SLUDGE WASTE-WATER LISTERIA-MONOCYTOGENES SUPEROXIDE-DISMUTASE ANAEROBIC-DIGESTION SEWAGE-SLUDGE OZONE SOLUBILIZATION Engineering, Environmental Environmental Sciences Water Resources
中文摘要	Using the practical sludge obtained from municipal sewage treatment plants, the mechanism of the sludge ozonation process was systematically investigated by a combination of biological and chemical approaches, including analysis of the changes in biological response by CFU and PCR-DGGE, bio-macromolecular activity and radical scavenging activity. The results indicated that after the sludge was exposed to ozone at less than 0.02 g O-3/g TSS, the DGGE fingerprint remained constant and there was still some enzyme activity, indicating that the sludge solubilization was the main process. At greater than 0.02 g O-3/g TSS, the bacteria began to be broken down and ozone was used to oxidize the bio-macromolecules such as proteins and DNA released from the sludge. Bacteria belonging to 'G-Bacteria' were able to conserve their DNA in the presence of less than 0.08 g O-3/g TSS. At levels higher than 0.10 g O-3/g TSS, the disintegration of the sludge matrix became slow and the microbes lost most of their activity, and ozone was used to transform the bio-macromolecules into small molecules. However, at levels higher than 0.14 g O-3/g TSS, the ozone failed to oxidize the sludge efficiently, because several radical scavengers such as lactic acid and SO42- were released from the microbial cells in the sludge. (C) 2008 Elsevier Ltd. All rights reserved.
语种	英语 ; 英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD ; OXFORD ; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79384]
专题	清华大学
推荐引用方式 GB/T 7714	Yan, Sang-Tian,Chu, Li-Bing,Xing, Xin-Hui,et al. Analysis of the mechanism of sludge ozonation by a combination of biological and chemical approaches[J],2010, 2010.
APA	Yan, Sang-Tian,Chu, Li-Bing,Xing, Xin-Hui,Yu, An-Feng,Sun, Xu-Lin,&Jurcik, Benjamin.(2010).Analysis of the mechanism of sludge ozonation by a combination of biological and chemical approaches..
MLA	Yan, Sang-Tian,et al."Analysis of the mechanism of sludge ozonation by a combination of biological and chemical approaches".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。